The Mack CH613 is a heavy-duty Class 8 semi truck known for its durability and reliability, featuring a dashboard with essential warning lights for the driver. This guide covers the specific indicators you'll see on the CH613's instrument cluster, helping you interpret alerts and take appropriate action.
Mack CH613 Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Check Engine | AMBER | This light on the Mack CH613 signals an engine management or emissions system fault, often triggered by sensor readings or DPF issues. | Reduce speed, check for drivability issues, and schedule diagnostic scan at next stop. | |
| Engine Oil Pressure | RED | Indicates dangerously low oil pressure, which can cause engine damage in the Mack CH613 if ignored. | Immediately pull over and shut off engine; check oil level and for leaks. | |
| Battery / Charging | RED | The CH613's charging system voltage is too low or the alternator has failed, risking battery drain. | Turn off non-critical loads and head to a service bay; check belt and connections. | |
| Coolant Temperature | RED | Engine coolant exceeds safe operating range, common in the Mack CH613 during heavy loads or cooling system failure. | Stop engine and let cool; check coolant level and fan drive operation. | |
| Transmission Temp | AMBER | Transmission fluid temperature is elevated, often from overloading or continuous stop-and-go in the CH613. | Shift to lower gear, reduce speed, and pull over if light persists to cool transmission. | |
| Brake System | RED | A critical fault in the CH613's air brake system, such as low air pressure or a leak. | Stop immediately and inspect air pressure gauges; do not drive until system is safe. | |
| ABS | AMBER | The anti-lock brake system on your Mack CH613 has a fault, but normal braking remains functional. | Continue driving with caution; have ABS system serviced at earliest convenience. | |
| Parking Brake | RED | Indicates the parking brake is engaged on the CH613; will extinguish when fully released. | Release parking brake fully before moving; if light stays on, check brake pressure. | |
| Seat Belt | RED | Driver's seat belt is not fastened in the Mack CH613; reminder to secure yourself. | Buckle seat belt immediately. | |
| High Beam | BLUE | High beam headlights are on in your CH613; intense lighting for dark roads. | Dim to low beam when approaching other vehicles. | |
| DEF / AdBlue | AMBER | Diesel exhaust fluid level is low or system malfunction in the CH613, affecting emissions compliance. | Refill DEF at next stop; if light flashes, schedule service to avoid derate. | |
| DPF / Regeneration | AMBER | The diesel particulate filter in your CH613 needs regeneration, either active or manual. | Drive at highway speed to initiate active regen, or perform parked regen per manual. | |
| Water in Fuel | AMBER | Water has accumulated in the fuel/water separator on the CH613, risking injector damage. | Drain water separator immediately; if light returns, check fuel source. | |
| Low Fuel | AMBER | Fuel level is low in the Mack CH613's tanks; enough for limited miles. | Refuel at nearest station to avoid running out. | |
| Air Filter | AMBER | Restricted air intake filter on the CH613, reducing engine performance and fuel economy. | Replace air filter element as soon as possible. | |
| Fuel Filter / Water Separator | AMBER | Fuel filter is clogged or water separator needs service on your CH613. | Replace fuel filter and drain water separator at next service. | |
| Trailer | AMBER | Indicates a fault with the trailer's electrical connection or ABS on the CH613. | Inspect trailer plug and wiring; check trailer ABS status. | |
| Air Brake Pressure (Low) | RED | Air pressure in the CH613's brake system is below safe operating level. | Wait for pressure to build; do not drive until pressure is in normal range. | |
| Engine / Exhaust Brake | GREEN | Engine brake (retarder) is active on the Mack CH613, aiding downhill speed control. | Use normally; no action needed. | |
| Low Oil Level | AMBER | Engine oil level is below safe range in the CH613, can lead to low pressure if ignored. | Add oil to proper level at next stop; check for leaks. |
20 symbols shown. Icons follow ISO 2575 dashboard standards; exact graphics vary by model year.
Most Important Warning Lights
Engine Overheating
Common causes
- Low coolant level
- Failed fan drive
- Clogged radiator
What to do
Pull over and shut down the Mack CH613 engine. Check coolant level when cool, inspect fan operation, and clean debris from radiator fins before resuming.
Loss of Brake Air Pressure
Common causes
- Air leak in system
- Compressor failure
- Broken hose
What to do
Stop immediately and do not move the CH613 until air pressure rebuilds. Listen for leaks; if pressure drops rapidly, call for roadside repair.
Engine Oil Pressure Drop
Common causes
- Low oil level
- Oil pump failure
- Clogged oil filter
What to do
Shut off engine immediately. Check dipstick on the CH613; add oil if low. If light persists, do not restart; tow to Mack service center.
Transmission Overheating
Common causes
- Overloading
- Low fluid level
- Cooler blockage
What to do
Shift to a lower gear and reduce engine load on the CH613. Pull over and let transmission cool; check fluid level and cooler for debris.
Charging System Failure
Common causes
- Alternator belt failure
- Wiring fault
- Battery terminal corrosion
What to do
Turn off all unnecessary electrical loads in the CH613. Head to nearest shop; check belt tension and battery connections.
Frequently Asked Questions
Why is my CH613's Check Engine light on after a regen?
A regeneration cycle can trigger temporary codes; if the light stays on, the DPF may be clogged or there's an EGR issue. Have the system scanned at a Mack dealer.
What does the amber 'Water in Fuel' light mean on my Mack?
It means water has accumulated in the fuel/water separator. Drain the separator (located on the frame) to prevent injector damage; use the dash switch if equipped.
How long can I drive with the amber DEF light on?
You have about 100 miles before the CH613's engine derates. Refill DEF immediately to avoid reduced power and potential downtime.
My brake system red light stays on even after air pressure builds—what's wrong?
It could be a faulty low-pressure switch or a leak that prevents full pressure. Check both primary and secondary gauges; if pressure holds, the switch may need replacement.
Why does my CH613's transmission temp light come on only on grades?
Pulling heavy loads uphill increases transmission heat. Downshift to reduce load, and ensure the cooler is clean. If persistent, check fluid level and condition.
Is it safe to drive with the ABS light on?
Yes, your standard brakes will work, but the anti-lock function is disabled. Drive with extra caution, especially on wet roads, and have the system inspected soon.